Rizzoli & Isles Seasons (2010) S1 Ep 1 See One, Do One, Teach One

Detective Jane Rizzoli and medical examiner Maura Isles investigate the grisly murder of a wealthy couple. The M.O. matches the work of a serial killer known as the Surgeon, who once nearly murdered Jane. Now that the Surgeon is behind bars, it seems one of his protégés is picking up where he left off.